The invention discloses a centrally-mounted motor transmission system, a centrally-mounted motor and an electric bicycle, the centrally-mounted motor transmission system comprises: a motor assembly; the first-stage transmission wheel set comprises a first-stage transmission gear and a first-stage transmission gear shaft which are coaxially connected. The second-stage transmission wheel set is in meshing transmission with the first-stage transmission gear shaft; the middle shaft gear is in meshing transmission with the second-stage transmission wheel set; wherein the first-stage transmission gear shaft comprises an input end, an output tooth part and a supporting shaft, the input end is connected with the first-stage transmission gear, the output tooth part is located between the input end and the supporting shaft, the diameter of the supporting shaft is smaller than the diameter of the output tooth part and the diameter of the input end, and the supporting shaft is connected with the first needle bearing. According to the centrally-mounted motor transmission system, the transmission end of the first-stage transmission gear shaft is supported through the needle bearing, and therefore the problem that due to the fact that the first-stage transmission gear shaft is in a suspended state, the single side of the first-stage transmission gear shaft is seriously abraded in the transmission process is solved.
本发明公开一种中置电机传动系统、中置电机及电动自行车,所述中置电机传动系统,包括:电机组件;一级传动轮组包括同轴连接的一级传动齿轮和一级传动齿轴;二级传动轮组与一级传动齿轴啮合传动;中轴齿轮,与二级传动轮组啮合传动;其中一级传动齿轴包括输入端、输出齿部和支撑轴,其中输入端与一级传动齿轮连接,输出齿部位于输入端和支撑轴之间,支撑轴的直径小于输出齿部、输入端的直径,支撑轴与第一滚针轴承连接。本发明提供的中置电机传动系统,通过滚针轴承对一级传动齿轴的传动端进行支撑,从而克服了一级传动齿轴由于处于悬空状态而在传动的过程中产生的单侧磨损严重的问题。
Middle motor transmission system, middle motor and electric bicycle
一种中置电机传动系统、中置电机及电动自行车
2023-01-03
Patent
Electronic Resource
Chinese
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